Lidar technology has come a long way since its inception, and is now used for a variety of purposes such as cloud profiling, wind measurement, aerosol study, quantifying atmospheric components, and more. But one of the most common questions people have about Lidar is whether it can penetrate walls. The answer is yes. Most TTWS radars operate in the 1 to 10 GHz frequency range, which is capable of penetrating through concrete, wood, plastic, glass and other walls.
To demonstrate this, you can scan your home or office, which is usually filled with Wi-Fi networks. Lidar altimeters look downwards, atmospheric Lidar looks upwards and Lidar-based collision avoidance systems look sideways. There are many other applications of Lidar apart from the ones mentioned below, as is often mentioned in national Lidar data set programs. The ground reflection of an aerial Lidar provides a measure of surface reflectivity (assuming that atmospheric transmittance is well known) at the wavelength of the Lidar; however, ground reflection is commonly used to perform atmospheric absorption measurements.
Topographic Lidar usually uses a near-infrared laser to map the land, while bathymetric Lidar uses green light that penetrates the water to also measure the elevations of the seabed and riverbeds. In conclusion, Lidar technology has advanced significantly over the years and can penetrate walls. It can be used for a variety of purposes such as cloud profiling, wind measurement, aerosol study and quantifying various atmospheric components. It can also be used to measure surface reflectivity and perform atmospheric absorption measurements.